<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>登录页面</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f0f0f0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
        .login-container {
            background-color: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            width: 300px;
        }
        .input-group {
            margin-bottom: 15px;
        }
        .input-group label {
            display: block;
            margin-bottom: 5px;
        }
        .input-group input {
            width: 100%;
            padding: 8px;
            box-sizing: border-box;
        }
        .submit-btn {
            width: 100%;
            padding: 10px;
            background-color: #007bff;
            color: white;
            border: none;
            cursor: pointer;
        }
        .submit-btn:hover {
            background-color: #0056b3;
        }
    </style>
</head>
<body>
    <div class="login-container">
        <h2>用户登录</h2>
        <form id="loginForm">
            <div class="input-group">
                <label for="username">用户名:</label>
                <input type="text" id="username" name="username" required>
            </div>
            <div class="input-group">
                <label for="password">密码:</label>
                <input type="password" id="password" name="password" required>
            </div>
            <button type="submit" class="submit-btn">登录</button>
        </form>
    </div>

    <script>
        document.getElementById('loginForm').addEventListener('submit', function(event) {
            event.preventDefault();
            const username = document.getElementById('username').value;
            const password = document.getElementById('password').value;

            // 这里可以添加你的登录逻辑，例如发送 AJAX 请求到服务器进行验证
            console.log('尝试登录:', { username, password });
            alert('登录成功！');
        });
    </script>
</body>
</html>
